Miracle Magic Cannon

[Two elves~two swordsmen~running fast, running fast~a mage behind, and a group of monsters~so strange, so strange...] A team of five people accidentally obtained a treasure that could compete with the entire demon clan. The blade of the sword stirred up blood, and the spell set the ice field on fire. Under the attack of various unexpected monsters, how did the five people survive? Faced with the stakes of life and death, what choice will everyone make? A legend of swords and magic, all in this book... (Ps: This book draws on some settings from the online game [Miracle MU], but it is not entirely consistent. Please treat it as a brand new story)